Sewing machine



will e entvine inaorrrnie;

Application-filed February 7, Ml. Serial No. 357,977.

ouely driven rotary hook takeeup the loop `in the needle-thread andpaseee san/ie round the under-thread, and 1t has particular ret erenceto machines oit the Said .kind inwhich a reely` bolohin, cheese ortholike l(hereinafter "referred to ae a reel) `oi thread ielueed Jfor theunder-thread in the ormpin which it comes from the manufacturer. tionie,`ezt the `Said .kind in which the under-thread ie rie-wound on a spoolor the like.

The invention has for iteV main object to provide an improvedarrangement olf reel, `spool or like caeinggor carrier ilor containing;

or carrying` the reel,-spool or `the like 'of undenthread, which willenable the ready insertion and removal oli said reeh Spool or the likefrom above, and will aleoinateriallv "reduce the tension` ontlieneedlethread dni'- ing the formation oi' the` loop and the paeeagethereol over the under-thread. ik further object of the invention ie` toprovide improved means` oil? t nieioninggg` the nnderlthread, i i l'According to the invention, the rotary hook mounted to rotate aroumilthe reel7 spool or like casingn `or carrier (hereinalter referred to asthe ieel casing) which containeor carries the reel, spool or the likeolf under-thread, and the reel casing is mounted "sonsnot to rotate, andso that its airis is ololioue to theaXie` oi the rotary hook and itsiront end, throughwhich the reel,` spool orthe like is inserted andremoved, has an upward tilt. The reel.,` spool or the like oLl'under-thread is` mounted on aV peg in the reel. oasngand 'fortensioning' the thread we rotatably mount onthe peg a gripping' deivicefto receive and secure the reel, spool or the like9 andcomprieinpgwa lianrfed sleeve `adapted to have ite lanoc adjuetahlvpiaf-red anninet the end oi? the re l caeinnl or a "frictionwasher orthe like Ylitted Abetween rlhe inven` however, also applicable tonrachlnee` jremoved 'from the casing,

the tla-ngeand the end of the reel casing'. The gripping device may alsocomprise bow springs adaptedto receive the reel, spool or `the like andconnected to said flanged sleeve described withreterence totheaccompanyd ingudrawingvg in which 7Fig. l is a eide view, F 2 a :trentview, andlfig; 3 `a Sectional plan illustrating;` one i'orm ofstationary reel casing;` and tensioning means `in accordance therewith,and Fig. l ie a section o'lf the reel cas-ling and its carrvingdiecremoved.

Referring to :the drawing, a is a stationary reel caelngqifor theunder-thread, and D ie a rotary` hook ring formed with a hook candadapted to rotate around thecasing a. r,lhe hook ring Z) iS mountedon the `ann'iila; flange el oli spider e fixed on the driving` The `reelcasing o ie iiXed atan angle in a disc glee that ite axis ie oblique tothe airis of the hook Vring;4 'b and its iront or open end has annpwardtilt towarce the Sliding; cover plate h closing the opening in the hasej throughfwhich the reel, spool or the like. or under-thread ie ineertedinto and The .disc g `ie mounted in recate` formed between a lip c onthe hook ring and the flange ci Volf the spider e, and the disc and reelcasing` are prevented troni rotating by a tongue m on thelatter engagingin a notch a in a member o secured `at j; to the underside of the liassej; Any other appropriate means oit anchoring; the dis-3c g -and` reelcasing` a may he employed.`

The disc g is out away at g to torni a proiection r and the hook ring 7)and Spider the loopl i l loop? the hook carrce Same jtorward nml one vpart or side or. the loop engegee the projetAh tion i" en the 'dise g':ind is pussed through the gaps s. t to and over the rear of the reeleasing ya, the other part or s'de et the loop being thrown on to theliront oiE the reel me@ ing by the projection u and passed thereover. Onthe loop being carried over the under-thread und disengaged from thehooi; c. it is pulled up by the tolte-up niotion in the usuel wey, theloop peesing over the tongue m which is en easy fit in the notel n 'forthe purpose. and is `ornied with in opening m1 to @leer the needle whensinne descends.

iin order to l'ueilitate Jthe pass loop round the reel neng the surfaceon which tl'e loop minimize the tension on the thre-.u

the loop, narrow r? )s a pro fiel from the reel easing. to neer tn`4 ofits eurryingdise g. @onrein es illustrated, three sneh. rihs r at therib w T he at to provide {inv/er spa@ l ing of the reel. spool or theli-l e o thread during the thereol. n

The reel, spool or the like oi luider-tliread. shown in dotted linee inFig. l. is mounted on a peg g/ in thereel easing' fr, and for te.sioning the thread there is mounted on peg a gripping device comprising'springs e to receive and secure the re or the like, and inner and outersln 3 to which the ends of the sprine tnehed.

:liront side Ol the dise end it the rear side.

underinsertion no reinoral Theinner sleeve 2 is I' Y flange 4 adaptedtolse ed]nstnhlj-,fv pr against the end o1 the Casino' c o, or againstfriction Washer interposed between the flange and the end the easing, byspiral spring G surrrfundirl the peg 1/ and Vrut T screwing on the peg':nid bearing i 'ift a loose sleeve El which in turn bearsrgainst theouter end oit the spiril sp1-inf l', llo; adjusting the nut, thestrength ot the spiral. spring' (3 und. hence the tension. olf theunderthread may be adjusted.

It will be obvious that the inclined arrangement o1 the non-rotatingreel easing a Combined with the centre tensioningv oit the under-threadhas the great eduantege it dispensing with any threading oit theunderthread, it beingsullieient to simply place the reel, spool or thelike on the pegy und ee1rinenee sewing, and also greatly facilitates theinsertion and removal or the reel. spool or the like of under-theedtroni above, and

`the adjustment of the tension olf the thread.

Vhet we claim es our invention, :ind de- .eire to secure by LettersPatent is 2- l. In o lock-stitch sewine innrhine. hool'; ring mounted'lor r ri' parallel with the needle, e.

seid ring :nid held nffiiinst rotation therewith, n. reel. Casinglnxvlngr a spool supporting pirot therein rai iei'l hj-i the dier, withthe pirot extending. i reriiral plane npwardl)v l jr with i hooi-c ring`spool ol thread by 'die pivot within the ne oili'ndiig; niin'alrdl'r astationary .fnpporl haringl toward the needle into `ne looted); extendswlnrel'rr y the needle thread is carried ound tia hread and pulled npathe 'il nass orel the longue and ihrongh fi u and ohlidre i.lodi-slileli :sewing in: rhino. hooi;

) l i i ,interi for r` 'ion ii rphne parallel 1t rotntion therewi h. aroel extending in r rertirnl piane innrarfllv and obiiqnelj.' n'h.ospeci to the plano olroA 'tation el: the hook ring. a su ol oi (hrendrotateli worried h" 'within the ree :asii l entendi I npwardl)- t tonar)v support har- 2 toward the needle into .l up. the und lhrongrh'ing an aperture fe of the needle.

mening inazfhino har xrrtirlilly hronj* :limit il lending ai ri iniorenirnl, of the needle` said what( heine' 'on relalirel).4 lov (ha e.a hooh rin;` rrr-- sinrlft and in operaV4 fe relation to 'die nee lie. ndise rarriod hy the ring; and held against relation ihn 'ercith and invaphtie perprndii-nl ir lo the h:. l1. a enishnped ra l its :uns in thethe 'i' work beneath ne of the ed by the end "2li lli' ihr diri willi.'ertirzl plano el' the slnil't i extending nprfnrdly and ohliqml)v awaytrein the shrill., a spool o i' thread rotatably nionnted within theeasiinr about the axis of the literand means 'or nrexrnling rotationoli' he casing and disrlait permit-4 ting passage oli the thread loon.

In e lock-stitch sewing niaehine having a needle passing` verticallyVVthrough a work supporting surface, i shaft disposed below the saidsnriaoe and extending :it right ungles to the direction ol inorenientof' the worltbeneeth the needle. said shaft being` rotated in tiniedrelation relatively to the edle. .i dise enrried ln' inst rotatlontherewith tire rr@ ain in lr the rin.;V and lll" held a ga the plano ol' isaiasi.

tatably mounted; within the casing about the airis of the latter, atongue extending up-` wardly from the casing, and a stationary "supporthaving,- a notch therein into which.

the tongue loosely entends whereby as `the loop n thefneedlewthread iscarried around l the underthread `and pulled up the loop will passbetween the tongue and the slot. i

5. lin alook-stitcli sewing,` machine having a needle passing verticallythrough a worlr supporting surface, a shait disposed below the saidsurlfaee and extending` at `irifrlit angles to the direction oitmovement oil' the work beneath the needle, said shall. being rotated intimed relation relatively to the movements ot the needle, aihoolr ringcarried by the end of the shatt and in operative relation to the needle,a disc carried by the ring and held against rotation there with and. ina plane perpendicular to the shaft, a cup-shaped easing carried by thedisc with its axisin the vertical plane ot` the shaft andA entendingupwardly and obliquely away from the shaft, a spool oi'l threadrotatably mounted within the `casing1 about the airis of the latter, atongue ei;- tending upwardly from the casing, and a stationary supporthaving anoteh therein into which the tongue loosely entends whereby as`the loop in the` needle threadis can ri'ed around the underthreadandpulled up the loop will pass between the tongue and slot, said tonguehaving' `an aperture therein lf-oil the passage ot the `needle-` 6. ln alock stitch sewing machine, a hoolr ring; inountedsior rotation in aplano parallel with the needle, a dise mounted in said ringI and heldagainst rotation therewith, a reel easing having; a spool. supportingpivot therein carried by the disc 'ivii'zlithe pivot extending in a'vertical planii, upwardly and obliquely with respect to 'the pla ne otrotatioiiir the hoolir ring', a spool-oli thread rotatably carried bythe pivot within the reel easing, and means tor retaining,` the easing;against rotation but permitting1 passage oi the thread loop around. theeasing.

T. `lln a` loclestitch sewing machine, the combination with thereeleasing .having an axial pivot therein, oit a `gripping device roeA`tatably mounted on said per);` in the casing,`

to receive and secure the reel ot under-` thread, a flange on saiddevice, and means adjustably carried by the peg,- tor varyingthefriction between the tlange and the easine'.

a rotatable hoolr ring and a relatively sta tionary dise, a reel casing'carried by the disc, a pivot pin .in said casing and entending; ain'ally thereot troni the bottoni wall, a resilient arbortloi?,'i'eceivinpg` and mounting,` a spool rotatably upon said pin andhaving- ;1 a vidange abutting' the bottoni wall oit the easing,` aspringl `lor i 'forcing the arbor` and liange against the bottom wall,and means adjustable on the pin tor varying the stress ol' the spring. i

i 9. ln a loclrstiteh sewing machine having a rotatable hoolr ring,- anda relatively stationary disc, a reel easing carried by the dise, a pivotpin in said casing and entendinp; axially thereof troni the bottoniwall, a flanged sleeve rotatably mounted on said pin, bow springsextending therefrom lengthwise ot the pin, `a sleeve to which the otherends oit the springs are connected, a

sleeve slidable 'on `said pinand upon which toe second mentioned sleeveis slidable, a

thread spool carried by the bow springs, a

springcompressed between the third mein tioned sleeve and the flangedsleeve tor :lorcing the latter against the bottom of the `casing` toresist rotation of the spool and sleeves, and means adjustable on saidpin for shitting the third mentioned sleeve to vary the compression olthe springv lln witness wliereoit we have hereunto set a i 8. ln aloclestitch sewing machine havnipv

